Question

The air brake system on a commercial motor vehicle is comprised of three separate systems. Can you name them?

Accepted Answer

1) Service Brake System - This is the brake system that is controlled by the brake pedal during normal driving.   
2) Parking Brake System - This keeps the vehicle from rolling while parked.   
3) Emergency Brake System - This uses parts of each of the two previous systems in order to stop the vehicle in the event of a brake failure.

Flashcard 1 - Air Brakes Flashcard Set for the CDL

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